I-Urea Formaldehyde Glue Powder, Ilungele Ukuthunyelwa ~

Incazelo Yomkhiqizo

I-Urea-formaldehyde resin (UF), eyaziwa nangokuthi i-urea-formaldehyde resin, iyi-polycondensation ye-urea ne-formaldehyde ngaphansi kwesenzo se-catalyst (i-alkaline noma i-acidic catalyst) ukwakha i-urea-formaldehyde resin yokuqala, bese yakha inhlaka engancibiliki futhi isigaba sokugcina esingenakunyakaziswa ngaphansi kwesenzo se-ejenti elaphayo noma isithasiselo. I-resin ye-thermosetting. Iresin ye-urea-formaldehyde ephulukisiwe ilula ngombala kune-phenolic resin, iyashintshashintsha, imelana nama-acids abuthakathaka kanye ne-alkali ebuthakathaka, inezici ezinhle zokuvikela, ukumelana nokugqokwa okuhle kakhulu, futhi ishibhile. Iwuhlobo oluvame ukusetshenziswa kakhulu phakathi kokunamathelayo, ikakhulukazi Ekukhiqizeni amabhodi okwenziwa ahlukahlukene embonini yokucubungula ukhuni, inhlaka ye-urea-formaldehyde kanye nemikhiqizo yayo eguquliwe yenza cishe u-90% wengqikithi yokusetshenziswa kokunamathela. Kodwa-ke, i-urea-formaldehyde resin kulula ukubola lapho ibhekene nama-acids aqinile nama-alkali. Inokumelana nesimo sezulu esibi, i-viscosity yokuqala embi, ukushwabana okukhulu, ukubola, ukumelana namanzi, nokuguga kalula. Amabhodi okwenziwa akhiqizwe nge-urea-formaldehyde resin akhulula i-formaldehyde ngesikhathi sokukhiqiza nokusetshenziswa. inkinga, ngakho-ke kufanele ilungiswe.

Isicelo

Ingasetshenziswa emikhiqizweni engadingi ukumelana namanzi aphezulu kanye nezakhiwo ze-dielectric, njengezicucu zamandla, ukushintsha, izibambo zomshini, izinsimbi zensimbi, ama-knob, izidingo zansuku zonke, imihlobiso, amathayela we-mahjong, izivalo zasendlini yangasese, futhi ingasetshenziswa ukwakhiwa kwezinye izitsha zetafula.

I-urea-formaldehyde resin iwuhlobo lokunamathela olusetshenziswa kakhulu. Ikakhulukazi ekukhiqizeni amabhodi okwenziwa ahlukahlukene embonini yokucubungula izinkuni, inhlaka ye-urea-formaldehyde kanye nemikhiqizo yayo eshintshiwe yenza cishe u-90% wesamba esisetshenziswayo sokunamathela.